Home / 18,531.72-27,798.39-5,383.80

Finding the Fourth Proportional to 18,531.72, 27,798.39 and 5,383.80

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Solution

The fourth proportional to 18,531.72, 27,798.39 and 5,383.80 is: 8,075.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531.72 : 27,798.39 = 5,383.80 : x
  2. Step 2: Convert to fraction form
    18,531.72/27,798.39 = 5,383.80/x
  3. Step 3: Cross multiply
    18,531.72x = 27,798.39 × 5,383.80
  4. Step 4: Simplify right side
    18,531.72x = 149,660,972.08
  5. Step 5: Solve for x
    x = 149,660,972.08/18,531.72
  6. Step 6: Final answer
    x = 8,075.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.